Astra Linux – Vulnerability in Thunderbird

An outdated graphics library Angle likely contained vulnerabilities that could potentially be exploited. This vulnerability affects Thunderbird 78.9 and Firefox ESR 78.9...

Astra Linux – Vulnerability in Thunderbird

Mozilla developers and community members Julian Hector, Randell Jesup, Gabriele Svelto, Tyson Smith, Christian Holler, and Masayuki Nakano reported memory safety bugs in Firefox 94. Some of these bugs exhibited signs of memory corruption, and we assume that with sufficient effort, some of these...

Astra Linux – Vulnerability in Firefox and Thunderbird

Cross-Site Tracing occurs when a server echoes a request back using the Trace method, allowing an XSS attack to access authorization headers and cookies that are inaccessible to JavaScript such as cookies protected by HTTPOnly. To mitigate this attack, browsers imposed restrictions on fetch and...

Astra Linux – Vulnerability in Firefox and Thunderbird

When a ServiceWorker intercepted a request using FetchEvent, the origin of the request was lost after the ServiceWorker took control of it. This caused the SameSite cookie protections to be negated. This issue was addressed in the specifications, and later in various browsers. This vulnerability...

Astra Linux – Vulnerability in Thunderbird, Firefox

An outdated library libusrsctp contained vulnerabilities that could potentially be exploited. This vulnerability affects Firefox versions earlier than 108...

Astra Linux – Vulnerability in Thunderbird

An optimization in WebGL was incorrect in some cases, and could have led to memory corruption and a potentially exploitable crash. Note: This advisory was added on December 13th, 2022 after we better understood the impact of the issue. The fix was included in the original release of Firefox 106...

Astra Linux – Vulnerability in Firefox and Thunderbird

The concurrent use of the URL parser with non-UTF-8 data was not thread-safe. This could lead to a “use-after-free” condition, resulting in a potentially exploitable crash. This vulnerability affects Firefox ESR 102.3, Thunderbird 102.3, and Firefox 105...

Astra Linux – Vulnerability in Thunderbird

A missing check related to text units could have led to a use-after-free condition and potentially exploitable crashes.Note: This advisory was added on December 13th, 2022 after we better understood the impact of the issue. The fix was included in the original release of Firefox 105. This...

Astra Linux – Vulnerability in Firefox and Thunderbird

Mozilla developers Andrew McCreight and Gabriele Svelto reported memory safety bugs present in Thunderbird 102.4. Some of these bugs showed signs of memory corruption, and we assume that with sufficient effort, some of these bugs could have been exploited to execute arbitrary code. This...

Astra Linux – Vulnerability in Firefox and Thunderbird

Using tables within an iframe, an attacker could cause the iframe contents to be rendered outside the boundaries of the iframe, leading to potential user confusion or spoofing attacks. This vulnerability affects Firefox ESR 102.5, Thunderbird 102.5, and Firefox 107...

Astra Linux – Vulnerability in Thunderbird, Firefox, NSS

An attacker could create a PKCS 12 certificate bundle in a way that allows arbitrary memory writes through the mishandled Safe Bag attributes of PKCS 12. This vulnerability affects Firefox 110, Thunderbird 102.8, and Firefox ESR 102.8...

Astra Linux – Vulnerability in Firefox and Thunderbird

When resolving a symbolic link, a race condition may occur, where the buffer passed to readlink might actually be smaller than necessary. This bug only affects Firefox on Unix-based operating systems Android, Linux, MacOS. Windows is unaffected. This vulnerability affects Firefox ESR 115.6,...

firefox: thunderbird: Privilege escalation in the DOM: Workers component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the DOM: Workers component...

firefox: thunderbird: Sandbox escape in the Remote Settings Client component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape in the Remote Settings Client component...

firefox: thunderbird: Privilege escalation in the DOM: Workers component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Privilege escalation in the DOM: Workers component...

firefox: thunderbird: Sandbox escape in the Remote Settings Client component

A flaw was found in Firefox and Thunderbird. The Mozilla Foundation's Security Advisory describes the following issue: Sandbox escape in the Remote Settings Client component...

MiracleLinux 8 : thunderbird-140.14.0-1.el8_10.ML.1 (AXSA:2026-1814:20)

The remote MiracleLinux 8 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-1814:20 advisory. firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL component CVE-2026-74934 firefox: thunderbird: Privilege escalation in the...

MGASA-2026-0388 Updated thunderbird packages fix security vulnerabilities

Uninitialized memory in MIME parsing. CVE-2026-84639 One byte overflow read in mail parser. CVE-2026-84640 Information disclosure due to malicious IMAP server response. CVE-2026-84641 Calendar invitation attachments could launch local executables. CVE-2026-84637 Allowed UNC hostnames for...

Updated thunderbird packages fix security vulnerabilities

Uninitialized memory in MIME parsing. CVE-2026-84639 One byte overflow read in mail parser. CVE-2026-84640 Information disclosure due to malicious IMAP server response. CVE-2026-84641 Calendar invitation attachments could launch local executables. CVE-2026-84637 Allowed UNC hostnames for...

RLSA-2026:65159 Important: thunderbird security update

Mozilla Thunderbird is a standalone mail and newsgroup client. Security Fixes: firefox: thunderbird: Site isolation issue in the Graphics: CanvasWebGL component CVE-2026-74934 firefox: thunderbird: Privilege escalation in the Networking: Cookies component CVE-2026-74953 firefox: thunderbird:...